Perspectives on NoSQL by Gavin M. Roy.
I don’t remember how I found this presentation but it is quite interesting.
Starts with a review of NoSQL database options, one slide summaries.
Compares them to PostgreSQL 9.0b1 using KVPBench, http://github.com/gmr/kvpbench.
Concludes that SQL databases perform as well if not out-performing NoSQL databases.
Really depends on the benchmark or more importantly, what use case is at hand. Use the most appropriate technology, SQL or not.
Still, I like the slide with database administrators running with scissors. I have always wondered what that would look like. Now I know. It isn’t pretty.